JP2022130085A - packaging case - Google Patents

Abstract

To provide a packaging case assembled from a single sheet of corrugated paper or the like, capable of forming a buffer part corresponding to the size of an article to be packed without using an additional member.SOLUTION: A packaging case includes a front surface plate, a first side surface plate, a first rear surface plate, a second side surface plate, a bottom surface plate, a first lid plate, a storage part, a first buffer plate, and a first buffer part forming piece, and is assembled by folding one sheet. The first buffer plate has a first bending line adjacent to an upper side of the first side surface plate via a folding line and extending in a direction parallel to the upper side, and a plurality of first slit pieces formed by a plurality of slits perpendicular to the first bending line. The first buffer part is formed by folding the first buffer part forming piece into a rectangular cylindrical shape. The first buffer plate is bent downward along the first bending line to form a first supporting part, and an article to be packed is pushed in from above the first supporting part, so that the first slit piece is pushed downward along the first bending line to form a storage recessed part.SELECTED DRAWING: Figure 6

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging case assembled from a sheet such as a corrugated cardboard sheet for packaging a product or the like.

Conventionally, as a packing method for packing items to be packed such as electric products, precision equipment main bodies, or replacement parts, so-called group packaging, in which a plurality of parts are packed together by placing a partition member in a cardboard case, is widely used. used.

For example, in Patent Document 1, a plastic corrugated cardboard has a double-wall structure on opposite sides, is continuous with the inner wall located outside the double wall at the top, and has a plurality of integrated double walls inside the double wall. A plastic corrugated cardboard with partition grooves is disclosed in which vertical partition grooves are provided and partition plates are inserted into arbitrary cuts according to the dimensions of industrial parts.

Further, in Patent Document 2, eight side plate pieces are continuously formed via hinges, and the left and right side plate pieces are formed via spacer pieces that are integrated adjacent to the left and right side plate pieces. A piece having a first partition plate with notches formed at intervals, a side plate piece combined with the A piece in the vertical direction and fixed to the spacer piece in the center, and top plate pieces above and below the side plate piece, A base plate piece and an insert piece are formed continuously, and the insert piece on the side of the base plate is fitted with a B piece formed with a lock piece that engages with the A piece and a notch formed in the first partition plate. and a second partition plate forming a partition.

JP 2009-280272 A Japanese Utility Model Laid-Open No. 58-116520

When packing using a packaging box such as Patent Documents 1 and 2, in order to position the object to be packed inside the packaging box and to protect the object from impact, the packaging box and the object to be packed are separated. A cushioning material is placed in the gap between Here, when packing items of different shapes and sizes in a single packaging box, a cushioning material suitable for the item to be packed is selected from multiple types of cushioning materials prepared in advance and placed inside the packaging box. Therefore, there is a problem that the number of parts increases and the packing work becomes complicated.

In view of the above problems, the present invention provides a packaging case assembled from a single sheet of corrugated paper or the like, in which a cushioning portion can be formed according to the size of the object to be packed without using additional members. intended to

In order to achieve the above object, a first configuration of the present invention is a packaging case assembled by folding one sheet, comprising a front panel, a first side panel, a first rear panel, and a second side panel. It has a face plate, a bottom plate, a first lid plate, a storage portion, a first buffer plate, and a first buffer portion forming piece. The first side plate is adjacent via a first fold line along the first side edge of the front plate. The first rear panel is adjacent to the first side panel via a second folding line parallel to the first folding line. The second side plate is adjacent to the first side of the front plate via a third folding line along the second side facing the first side. The bottom plate is adjacent to the lower edge of the front plate via a fold line. The first cover plate is adjacent to the upper side of the first rear plate via the fold line. The storage part is surrounded by the front plate, the first side plate, the first rear plate, the second side plate and the bottom plate, and is sealed by the first cover plate. The first buffer plate includes a first bending line adjacent to the upper side of the first side plate via a folding line and extending in a direction parallel to the upper side, and a plurality of bending lines extending in a direction orthogonal to the upper side across the first bending line. and a plurality of first slit pieces formed by slits. The first cushioning portion forming piece is adjacent to the lower side of the first side plate via the fold line. By bending the first buffer-forming piece into a rectangular tubular shape, the storage portion is formed with a first buffer portion disposed on the upper portion of the bottom plate. By bending the first shock absorbing plate downward along the first bending line and fixing the tip portion to the first shock absorbing portion to form the first supporting portion, the object to be packed is pushed from above the first supporting portion. , of the plurality of first slit pieces of the first buffer plate, the portion that abuts on the object to be packed is pushed downward along the first bending line to form a storage recess.

According to the first configuration of the present invention, the first buffer plate formed with the plurality of first slit pieces is bent downward along the first bending line and fixed to the first buffer portion, thereby providing the first support. When the object to be packed is pushed in, the portion of the plurality of first slit pieces of the first buffer plate that abuts on the object to be packed is dented to form a storage recess corresponding to the size and shape of the object to be packed. be. Therefore, the object to be packed can be reliably positioned in the storage section. In addition, since the first cushioning part faces the bottom surface of the item to be packed and the first support part abuts on the side surface, movement and rattling of the item during transportation and storage are suppressed without using additional members. In addition, it is possible to protect the bottom surface and side surfaces of the object to be packed from impacts, and reduce the number of members and the number of assembly steps of the packaging case.

BRIEF DESCRIPTION OF THE DRAWINGS The development view of the packaging case 1 which concerns on one Embodiment of this invention FIG. 4 is a diagram showing the assembly procedure of the packaging case 1 of the present embodiment, and is a perspective view showing a state in which the second storage portion forming plate 4 is bent from the state of FIG. 1 to form the second storage portion 23; FIG. 3 is a view showing the procedure for assembling the packaging case 1 of the present embodiment, showing a state in which the first cushioning portion forming piece 8 of the first storage portion forming plate 3 is bent from the state of FIG. 2 to form the first cushioning portion 20; Perspective view showing FIG. 4 is a diagram showing the procedure for assembling the packaging case 1 of the present embodiment, showing a state in which the first rear plate 7 is folded from the state shown in FIG. Perspective view 4A and 4B, the bottom plate 5 is bent, the first insertion piece 5a is inserted and fixed, and the first buffer plate 30 and the second buffer plate 31 are attached. The perspective view which shows the state in which the packaging case 1 bent and fixed to the 1st buffer part 20 was reversed in the front-back direction. FIG. 6 is a diagram showing the assembly procedure of the packaging case 1 of the present embodiment, and is a perspective view showing a state in which an object to be packed 40 is stored in the first storage section 21 from the state of FIG. 5; The perspective view which shows the state where the assembly of the packaging case 1 of this embodiment was completed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded view of a packaging case 1 according to one embodiment of the present invention. In the following figures, the cut lines are indicated by solid lines, and the folding lines are indicated by broken lines. The direction of one side of the rectangular front plate 2 (the vertical direction of the packaging case 1) is called the X direction, and the direction perpendicular to the X direction (the horizontal direction of the packaging case 1) is called the Y direction.

As shown in FIG. 1, the packaging case 1 is assembled from a sheet material (cardboard) such as a corrugated cardboard sheet punched into a predetermined shape. A first storage portion forming plate 3 connected via the front plate 2 and a second storage portion forming plate 4 connected via a folding line to a second side 2b facing the first side 2a of the front plate 2 and a bottom plate 5 connected to the lower side 2c of the front plate 2 via a folding line. A first insertion piece 5a is connected to the tip of the bottom plate 5 via a folding line.

The first storage portion forming plate 3 includes a first side plate 6 adjacent to the front plate 2 via a first folding line L1 along the first side 2a, and a first side plate 6 extending along the first folding line L1. A first rear plate 7 connected via a parallel second folding line L2, a first cushioning portion forming piece 8 connected to the lower side 6b of the first side plate 6 via the folding line, and a first and a first buffer plate 30 connected to the upper side 6a of the side plate 6 via a folding line. A plurality of folding lines extending in the Y direction and an insertion hole 8a are formed in the first cushioning portion forming piece 8. As shown in FIG. A first lid plate 9 and a flap 10 are connected to the upper side 7a of the first rear plate 7 via a folding line. A second insertion piece 9a is connected to the tip of the first cover plate 9 via a folding line.

The first buffer plate 30 has a first bending line 32a extending in the Y direction (direction parallel to the upper side 6a of the first side plate 6), and a first bending line 32a extending in the X direction (the upper side of the first side plate 6) across the first bending line 32a. A plurality of slits 33a extending in a direction orthogonal to 6a are formed. The plurality of slits 33a are formed parallel to each other at regular intervals. A plurality of first slit pieces 35a partitioned by adjacent slits 33a are formed by the plurality of slits 33a. A first fixing piece 30 a is formed at the tip of the first buffer plate 30 .

A notch portion 15 is formed in the front plate 2 by notching from the upper side 2d toward the lower side 2c. A second cover plate 17 is connected to the notch side 15a parallel to the upper side 2d of the notch 15 via a folding line. The second cover plate 17 has a rectangular shape, and the cutout side 15a, which is the connection position in the X direction between the front plate 2 and the second cover plate 17, is at the same position as the upper side 11a of the second side plate 11, which will be described later. . A third insertion piece 17a is connected to the tip of the second cover plate 17 via a folding line.

The second storage portion forming plate 4 includes a second side plate 11 that is adjacent to the front plate 2 via a third folding line L3 along the second side 2b, and a second side plate 11 that is adjacent to the second side plate 11 along the third folding line L3. A second rear plate 12 connected via a parallel fourth folding line L4, and a partition plate 13 connected to the second rear plate 12 via a fifth folding line L5 parallel to the fourth folding line L4. and a second cushioning portion forming piece 14 connected to the lower side 11b of the second side plate 11 via a folding line. Folded pieces 13a are connected to the side of the partition plate 13 facing the second rear plate 12 via a folding line.

A third cover plate 18 and a second buffer plate 31 are connected to the upper side 11a of the second side plate 11 via a folding line. Specifically, the second buffer plate 31 is indirectly connected to the upper edge 11 a of the second side plate 11 via the third cover plate 18 . The second buffer plate 31 has a second bending line 32b extending in the Y direction (direction parallel to the upper side 11a of the second side plate 11), and a second bending line 32b extending in the X direction (the upper side of the second side plate 11) across the second bending line 32b. A plurality of slits 33b extending in a direction orthogonal to 11a are formed. The plurality of slits 33b are formed parallel to each other at regular intervals. A plurality of second slit pieces 35b partitioned by adjacent slits 33b are formed by the plurality of slits 33b. A second fixed piece 31 a is formed at the tip of the second buffer plate 31 .

The procedure for assembling the packaging case 1 of the present invention will be described below. First, the second cushioning portion forming piece 14 of the second storage portion forming plate 4 of the unassembled packaging case 1 (blank plate) shown in FIG. A second buffer portion 22 is formed. Next, the second side plate 11, the second rear plate 12, and the partition plate 13 are folded along the third folding line L3 to the fifth folding line L5 extending in the X direction into a square tube shape so as to overlap the front plate 2. Then, the folding piece 13 a connected to the partition plate 13 is brought into contact with the inner surface of the front plate 2 . As a result, as shown in FIG. 2, a rectangular tube-shaped second housing portion 23 is formed in which the front plate 2 of the packaging case 1, the second side plate 11, the second rear plate 12, and the partition plate 13 face each other. A second buffer portion 22 is arranged on the bottom surface of the second storage portion 23 .

Next, as shown in FIG. 3, the first cushioning portion forming piece 8 of the first storage portion forming plate 3 is bent into a square tube shape along a folding line extending in the Y direction to form the first cushioning portion 20 . Next, along the first folding line L1 and the second folding line L2 extending in the X direction from the first side plate 6 and the first rear plate 7, the first rear plate 7 overlaps the second rear plate 12 to form a rectangular tube. fold into

Next, as shown in FIG. 4 , the inner region R of the end portion (the right end portion in FIG. 4 ) of the first rear plate 7 in the bending direction is adhered to the second rear plate 12 . As a result, as shown in FIG. 4 , a rectangular tube-shaped first housing portion 21 is formed in which the front plate 2 of the packaging case 1 faces the first side plate 6 , the first rear plate 7 , and the partition plate 13 . A first buffer portion 20 (see FIG. 3) is arranged on the bottom surface of the first storage portion 21 .

Then, from the state shown in FIG. 4, the bottom plate 5 is folded along a folding line extending in the Y direction, and the first insertion piece 5a connected to the tip of the bottom plate 5 is connected to the first rear plate 7, the first cushioning portion 20, and the first insertion piece 5a. It is inserted into the gap between the second buffer portion 22 (see FIG. 3). Also, the third cover plate 18 is bent into an L shape along the fold line and arranged so as to cover the upper surface of the second storage portion 23 .

FIG. 5 shows the packaging case 1 in which the bottom plate 5 is bent from the state shown in FIG. is a perspective view showing a state in which the is reversed in the front-rear direction. As shown in FIG. 5, the first shock absorbing plate 30 connected to the first side plate 6 is bent downward along the first bending line 32a and inserted into the first housing portion 21, whereby the first shock absorbing plate 30 is inserted. A first fixing piece 30a at the tip of the plate 30 is inserted into an insertion hole 8a (see FIG. 3) formed in the upper surface of the first cushioning portion 20 and fixed to form a first support portion 37. As shown in FIG. Similarly, the second buffer plate 31 connected to the third cover plate 18 is bent downward along the second bending line 32b and inserted into the first housing portion 21, and the tip of the second buffer plate 31 is bent downward. The second fixing piece 31a is inserted into the insertion hole 8a and fixed to form the second support portion 38. As shown in FIG.

As a result, the first buffer portion 20 and the second buffer portion 22 are held by the bottom plate 5, and the first support portion 37 and the second support portion 38 are held in a V shape in a side view. 2 storage part 23 is completed. The dimension in the height direction (X direction) of the first storage portion 21 is the same as the dimension of the first side plate 6 , and the dimension in the height direction of the second storage portion 23 is the same as the dimension of the second side plate 11 . be. In addition, the width direction (Y direction) of the first storage portion 21 is larger than that of the second storage portion 23 . Therefore, the first storage portion 21 has a larger volume than the first storage portion 23 .

Next, the items to be packed are stored in the first storage section 21 and the second storage section 23, respectively. The first storage portion 21 stores a relatively large object to be packed (for example, a drum unit), and the second storage portion 23 stores a relatively small object to be packed (for example, a developing unit).

FIG. 6 is a perspective view showing a state in which the object to be packed 40 is stored in the first storage section 21 from the state of FIG. When the object to be packed 40 is stored in the first storage portion 21 , the object to be packed 40 is pushed in from above the first support portion 37 and the second support portion 38 .

As a result, of the plurality of first slit pieces 35a and second slit pieces 35b of the first buffer plate 30 and the second buffer plate 31, the portion that contacts the object to be packed 40 (here, the second first slit from the outside) inner portion of the piece 35a and the second slit piece 35b) are pushed downward at the first bend line 32a and the second bend line 32b. As a result, as shown in FIG. 6, the first support portion 37 and the second support portion 38 form a storage recess 50 having substantially the same shape as the outer shape of the object 40 to be packed.

Next, the first storage portion 21 and the second storage portion 23 of the packaging case 1 are sealed. First, as shown in FIG. 6, the flap 10 connected to the upper side 7a of the first back plate 7 is folded back toward the second storage section 23 side. As a result, the upper end edge (edge portion) of the second rear plate 12 overlapping the inner side of the first rear plate 7 is covered with the flap 10, so that the edge portion is not exposed. Therefore, the design of the packaging case 1 is improved.

After that, the second cover plate 17 connected to the notch side 15a of the front plate 2 is folded along the folding line extending in the Y direction so as to overlap the outside (upper surface) of the third cover plate 18, as shown in FIG. , the third insertion piece 17a connected to the tip of the second cover plate 17 is inserted into the gap between the third cover plate 18 and the flap 10. As shown in FIG. Thereby, the flap 10 is held between the second back plate 12 and the second cover plate 17 , and the upper surface of the second storage section 23 is sealed by the second cover plate 17 and the third cover plate 18 .

Finally, the first cover plate 9 connected to the upper side 7a of the first rear plate 7 is bent along the folding line extending in the Y direction, and connected to the tip of the first cover plate 9 as shown in FIG. The first insertion piece 9a is inserted into the gap between the front plate 2 and the first buffer plate 30 and the second buffer plate 31. As shown in FIG. As a result, the upper surface of the first storage portion 21 is sealed by the first cover plate 9, and the assembly of the packaging case 1 is completed.

According to the packaging case 1 of the present embodiment, the first buffer plate 30 and the second buffer plate 31 having the plurality of slits 33a and 33b are bent downward along the first bend line 32a and the second bend line 32b. It is arranged in the first housing portion 21 and forms a first support portion 37 and a second support portion 38 . With this configuration, the first slit piece 35a and the second slit piece 35b of the first buffer plate 30 and the second buffer plate 31 are dented simply by pushing in the object 40 to be packed, and the object 40 to be packed can be placed in the first storage section 21. A storage recess 50 corresponding to the size and shape is formed. Therefore, the object to be packed 40 can be reliably positioned within the first storage portion 21, and the movement and rattling of the object to be packed 40 within the first storage portion 21 during transportation and storage can be suppressed. .

The first buffer portion 20 faces the bottom surface of the object 40 placed in the storage recess 50, and the first support portion 37 and the second support portion 38 abut on the side surfaces. Therefore, the bottom and side surfaces of the object 40 to be packed can be protected from impact. Moreover, since there is no need to separately arrange a cushioning material according to the size and shape of the object 40 to be packed, the number of parts can be reduced and the packing work can be simplified.

Furthermore, by inserting the first fixed piece 30a of the first buffer plate 30 and the second fixed piece 31a of the second buffer plate 31 into the insertion hole 8a formed substantially in the central portion of the first buffer portion 20, the first The support portion 37 and the second support portion 38 are fixed in a V shape when viewed from the side. As a result, the distance between the first support part 37 and the second support part 38 becomes smaller as the distance between the first support part 37 and the second support part 38 approaches the first cushioning part 20 , so that the compact object 40 is placed between the first support part 37 and the second support part 38 . can be easily fixed between

Further, by bending the first storage portion forming plate 3 and the second storage portion forming plate 4 connected to the front plate 2 to form the first storage portion 21 and the second storage portion 23, respectively, a plurality of members can be stored. The packaging case 1 partitioned into two storage parts can be assembled from one sheet without combining. As a result, it is possible to reduce the number of members and the number of assembling man-hours of the packaging case 1 .

In this embodiment, the first storage portion 21 is larger than the second storage portion 23, but the shape and size of the front plate 2, the first storage portion forming plate 3, and the second storage portion forming plate 4 are changed. By changing, it is possible to freely change the shape and volume of the formed first storage portion 21 and second storage portion 23 . As a result, it is possible to simultaneously accommodate two items to be packed that are different in size.

In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. For example, if there is no risk of damage or breakage to the items to be packed stored in the second storage portion 23, the second cushioning portion forming piece 14 may not be provided.

In addition, in the above-described embodiment, the first buffer plate 30 and the second buffer plate 31 are used to form the storage recess 50 in the first storage portion 21, but either the first buffer plate 30 or the second buffer plate 31 may be provided only. For example, when only the first buffer plate 30 is provided, the accommodation recess 50 is formed between the partition plate 13 and the first buffer plate 30 . However, when both the first buffer plate 30 and the second buffer plate 31 are provided, the buffer effect on both the left and right sides of the object to be packed 40 is enhanced, which is preferable.

In the above-described embodiment, the interior of the packaging case 1 is partitioned into two storage portions, the first storage portion 21 and the second storage portion 23, by the partition plate 13. 21 only. In this case, since the third cover plate 18 that seals the second storage portion 23 is not necessary, the second buffer plate 31 is directly connected to the upper side of the second side plate 11 .

INDUSTRIAL APPLICABILITY The present invention can be used for a package using a packaging case assembled from a single sheet such as a cardboard sheet. By using the present invention, it is possible to provide a packaging case capable of forming a cushioning portion according to the size of the item to be packed without using an additional member.

1 packaging case 2 front plate 3 first storage portion forming plate 4 second storage portion forming plate 5 bottom plate 6 first side plate 7 first rear plate 8 first buffer portion forming piece 9 first lid plate 10 flap 11 second second Side plate 12 Second back plate 13 Partition plate 14 Second buffer part forming piece 15 Notch 17 Second cover plate 18 Third cover plate 20 First buffer part 21 First storage part 22 Second buffer part 23 Second storage Part 30 First buffer plate 30a First fixed piece 31 Second buffer plate 31a Second fixed piece 32a First bending line 32b Second bending line 33a, 33b Slit 35a First slit piece 35b Second slit piece 37 First support part 38 second support part 40 object to be packed 50 storage recess

Claims (7)

A packaging case assembled by folding one sheet,
a front plate;
a first side plate adjacent via a first folding line along the first side edge of the front plate;
a first rear panel adjacent to the first side panel via a second folding line parallel to the first folding line;
a second side plate adjacent across a third folding line along a second side opposite to the first side of the front plate;
a bottom plate adjacent to the lower side of the front plate via a folding line;
a first lid plate adjacent to the upper side of the first rear plate via a folding line;
a storage section surrounded by the front plate, the first side plate, the first rear plate, the second side plate and the bottom plate and sealed by the first cover plate;
A first bending line adjacent to the upper side of the first side plate via a folding line and extending in a direction parallel to the upper side, and a plurality of slits straddling the first bending line and extending in a direction orthogonal to the upper side a first buffer plate having a plurality of formed first slit pieces;
a first cushioning portion forming piece adjacent to the lower side of the first side plate via a folding line;
has
The storage unit is
By bending the first cushioning portion forming piece into a square tube shape, a first cushioning portion disposed on the upper portion of the bottom plate is formed,
A first support portion is formed by bending the first buffer plate downward along the first bending line and fixing the tip portion to the first buffer portion, and the object to be packed is placed from above the first support portion. is pressed downward along the first bending line to form a storage recessed portion of the plurality of first slit pieces of the first buffer plate that contact the object to be packed. packaging case. A second bending line adjacent to the upper side of the second side plate via a folding line and extending in a direction parallel to the upper side, and a plurality of slits straddling the second bending line and extending in a direction orthogonal to the upper side a second buffer plate having a plurality of second slit pieces formed;
The storage unit is
By bending the second buffer plate downward along the second bending line and fixing the tip portion to the first buffer portion, the second support portion faces the first support portion with a predetermined gap. and pushing the object to be packed from above the first support portion and the second support portion, the plurality of first slit pieces and the second 2. The package according to claim 1, wherein a portion of the slit piece that abuts on the object to be packed is pushed downward along the first and second bend lines to form the recess for storage. Case. A first fixing piece and a second fixing piece are formed at the ends of the first buffer plate and the second buffer plate, respectively. An insertion hole is formed approximately in the center of the direction to
3. The first support portion and the second support portion are fixed in a V-shape when viewed from the side by inserting the first fixing piece and the second fixing piece into the insertion hole. Packaging case as described. a second rear panel adjacent to the second side panel via a fourth folding line parallel to the third folding line;
a partition plate adjacent to the second back plate via a fifth folding line parallel to the fourth folding line;
a second lid plate cut out from the upper side of the front plate toward the lower side thereof and adjacent to the cut side parallel to the upper side via a folding line;
has
The storage unit is
The front plate, the first side plate, the first rear plate, a first storage portion surrounded by the partition plate and the bottom plate, sealed by the first lid plate, and formed with the recessed storage portion; the front plate, the second side plate, and the second rear plate; , the partition plate, and the bottom plate, and a second storage portion that is sealed with the second lid plate is formed. packaging case. A second cushioning portion forming piece is provided adjacent to the lower side of the second side plate via a folding line,
5. The packaging case according to claim 4, wherein the second cushioning portion is formed by bending the second cushioning portion-forming piece into a rectangular tubular shape to form the second cushioning portion arranged at the bottom portion of the second storage portion. A flap is continuously provided on the upper side of the first back plate via a folding line, and the flap covers the upper edge of the second back plate by folding back to the inside of the second storage part, and the second back plate 6. The flap according to claim 4 or 5, wherein the flap is held between the second back plate and the second cover plate when the second container is sealed with two cover plates. packaging case. 7. The packaging case according to any one of claims 4 to 6, wherein the first storage portion and the second storage portion have different sizes.

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